Americans use many expressions with the word dog. People in the United States love their d

问题补充：
Americans use many expressions with the word dog. People in the United States love their dogs and treat them well. They take their dogs for walks, let them play outside and give them good food and medical care. However, dogs without owners to care for them lead a different kind of life. The expression, to lead a dog's life, describes a person who has an unhappy life. Some people say we live in a dog-eat-dog world. That means many people are competing for the same things, like good jobs. They say that to be successful, a person has to work like a dog. This means they have to work very, very hard. Such hard work can make people dog-tired. And, the situation would be even worse if they became sick as a dog. Still, people say every dog has its day. This means that every person enjoys a successful period during his or her life. To be successful, people often have to learn new skills. Yet, some people say that you can never teach an old dog new tricks. They believe that older people do not like to learn new things and will not change the way they do things. Some people are compared to dogs in bad ways. People who are unkind or uncaring can be described as meaner than a junkyard dog. Junkyard dogs live in places where people throw away things they do not want. But mean dogs are often used to guard this property. They bark or attack people who try to enter the property. However, sometimes a person who appears to be mean and threatening is really not so bad. We say his bark is worse than his bite. Dog expressions also are used to describe the weather. The dog days of summer are the hottest days of the year. A rainstorm may cool the weather. But we do not want it to rain too hard. We do not want it to rain cats and dogs. 【小题1】A person who lives an unhappy life can be described as “ ”.A．becoming sick as a dogB．leading a dog’s life C．living in a dog-eat-dog worldD．Working like a dog【小题2】The underlined word “mean” in Paragraph 4 most probably means “ ”.A．violentB．selfishC．wildD．Poor【小题3】What can we learn from the text?A．Everyone can be successful if he learns from the old.B．It might be difficult for the young to learn new skills.C．Junkyard dogs are careful in money arrangement.D．Fierce persons aren’t so awful as their appearance sometimes.【小题4】To support his idea, the author develops the text mainly by .A．listing reasonsB．using idioms C．giving examplesD．Making comparisonsB

(答案→)B 解析：主要介绍美国人使用许多带有狗字的表达方式。【小题1】考查事实细节题，结合“The expression, to lead a dog's life, describes a person who has an unhappy life.”表达方式—过着狗一般的生活，是描述一个过着不快乐的生活的人。故应选B。【小题2】考查词义猜测题，结合“But mean dogs are often used to guard this property. They bark or attack people who try to enter the property.”这种狗经常被用来保护这种“财产”。它们大声喊叫或攻击这片“财产”的人。故应选A。【小题3】考查事实细节题，结合“However, sometimes a person who appears to be mean and threatening is really not so bad.”然而，有时看起来凶猛、有危险性的人实际上并不那么糟糕。故应选D。【小题4】考查文章写作特色题，综合全文，可知作者每讲述一种带狗字的表达方式长加以例子来解释。故应选C。